* overprint bug (mkiv)
@ 2009-09-16 15:28 Peter Rolf
2009-09-16 16:43 ` Hans Hagen
0 siblings, 1 reply; 9+ messages in thread
From: Peter Rolf @ 2009-09-16 15:28 UTC (permalink / raw)
To: mailing list for ConTeXt users
[-- Attachment #1: Type: text/plain, Size: 364 bytes --]
Hi Hans,
overprinting is broken under very special conditions. You need to add
framed content with a defined mp overlay as background and *deactivated
frame* to a layer (last of the four pairs in the example). The text of
the last pair is written in the same \GSoverprint group (in this case
the \GSknockout is even missing). Very obscure.
Have fun,
Peter
[-- Attachment #2: ovp.tex --]
[-- Type: text/plain, Size: 1380 bytes --]
\setupcolors[state=start]
\setuppagenumber[state=stop]
\pdfcompresslevel=0
\pdfobjcompresslevel=0
\startuniqueMPgraphic{FOO}
fill OverlayBox withcolor lightgray;
\stopuniqueMPgraphic
\defineoverlay[FOO][\uniqueMPgraphic{FOO}]
\definelayer[BAR]
\starttext
% OK
\setlayer[BAR][x=0mm,y=0mm]
{\framed[background=color,backgroundcolor=lightgray,frame=off]
{\startoverprint first one\stopoverprint}}
\setlayer[BAR][x=50mm,y=0mm]
{\framed[background=color,backgroundcolor=lightgray,frame=off]
{\startoverprint second one\stopoverprint}}
% OK
\setlayer[BAR][x=0mm,y=15mm]
{\framed[background=color,backgroundcolor=lightgray,frame=on]
{\startoverprint first one\stopoverprint}}
\setlayer[BAR][x=50mm,y=15mm]
{\framed[background=color,backgroundcolor=lightgray,frame=on]
{\startoverprint second one\stopoverprint}}
% OK
\setlayer[BAR][x=0mm,y=30mm]
{\framed[background=FOO,frame=on]
{\startoverprint first one\stopoverprint}}
\setlayer[BAR][x=50mm,y=30mm]
{\framed[background=FOO,frame=on]
{\startoverprint second one\stopoverprint}}
% ( layer + overlay + frame=off ) is buggy
\setlayer[BAR][x=0mm,y=45mm]
{\framed[background=FOO,frame=off]
{\startoverprint first one\stopoverprint}}
\setlayer[BAR][x=50mm,y=45mm]
{\framed[background=FOO,frame=off]
{\startoverprint second one\stopoverprint}}
\flushlayer[BAR]
\stoptext
[-- Attachment #3: ovp.pdf --]
[-- Type: application/pdf, Size: 8673 bytes --]
[-- Attachment #4: Type: text/plain, Size: 487 bytes --]
___________________________________________________________________________________
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___________________________________________________________________________________
^ permalink raw reply [flat|nested] 9+ messages in thread* Re: overprint bug (mkiv)
2009-09-16 15:28 overprint bug (mkiv) Peter Rolf
@ 2009-09-16 16:43 ` Hans Hagen
2009-09-16 17:37 ` Peter Rolf
0 siblings, 1 reply; 9+ messages in thread
From: Hans Hagen @ 2009-09-16 16:43 UTC (permalink / raw)
To: mailing list for ConTeXt users
Peter Rolf wrote:
> overprinting is broken under very special conditions. You need to add
> framed content with a defined mp overlay as background and *deactivated
> frame* to a layer (last of the four pairs in the example). The text of
> the last pair is written in the same \GSoverprint group (in this case
> the \GSknockout is even missing). Very obscure.
\def\reuseMPbox#1#2#3#4#5% space delimiting would save some tokens
{\xdef\MPllx{#2}% but it's not worth the effort and looks
\xdef\MPlly{#3}% ugly as well
\xdef\MPurx{#4}%
\xdef\MPury{#5}%
\forcecolorhack\getobject{MP}{#1}} % else no proper color intent
the issue is as follows:
- i use attributes for such things
- and, in the backend i only look at glyph and rule nodes
- however, the reused graphic is an object
- so, i have a \forcecolorhack
- this tells the backend to treat the following node as well
there are a few more places where this is needed and in due time it will
be sorted out
Hans
-----------------------------------------------------------------
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
| www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
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___________________________________________________________________________________
^ permalink raw reply [flat|nested] 9+ messages in thread* Re: overprint bug (mkiv)
2009-09-16 16:43 ` Hans Hagen
@ 2009-09-16 17:37 ` Peter Rolf
2009-09-16 17:56 ` Hans Hagen
0 siblings, 1 reply; 9+ messages in thread
From: Peter Rolf @ 2009-09-16 17:37 UTC (permalink / raw)
To: mailing list for ConTeXt users
Hans Hagen schrieb:
> Peter Rolf wrote:
>
>> overprinting is broken under very special conditions. You need to add
>> framed content with a defined mp overlay as background and
>> *deactivated frame* to a layer (last of the four pairs in the
>> example). The text of the last pair is written in the same
>> \GSoverprint group (in this case the \GSknockout is even missing).
>> Very obscure.
>
>
> \def\reuseMPbox#1#2#3#4#5% space delimiting would save some tokens
> {\xdef\MPllx{#2}% but it's not worth the effort and looks
> \xdef\MPlly{#3}% ugly as well
> \xdef\MPurx{#4}%
> \xdef\MPury{#5}%
> \forcecolorhack\getobject{MP}{#1}} % else no proper color intent
>
> the issue is as follows:
>
> - i use attributes for such things
> - and, in the backend i only look at glyph and rule nodes
> - however, the reused graphic is an object
> - so, i have a \forcecolorhack
> - this tells the backend to treat the following node as well
>
Thank you Hans (also for the nice explanation)! The minimal example
works here, also the first test graphic. Nevertheless there is still a
bug in the definition of \forcecolorhack. The error message of my second
test graphic is the same as in
http://archive.contextgarden.net/message/20090901.094156.1dc47c81.en.html
So you should be able to produce the error with that example. The last
time I simply used the old (commented) definition and everything worked
again. I even looked at the definition of leaders that time (last used
in LaTeX around eight years ago) and I think \zeropoint is no valid glue
value here.
> there are a few more places where this is needed and in due time it
> will be sorted out
>
I don't know if I should laugh or cry here. It took me nearly two days
to make that minimal example. I'll interpret your last sentence as black
humour... :)
Best wishes, Peter
> Hans
>
> -----------------------------------------------------------------
> Hans Hagen | PRAGMA ADE
> Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
> tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
> | www.pragma-pod.nl
> -----------------------------------------------------------------
> ___________________________________________________________________________________
>
> If your question is of interest to others as well, please add an entry
> to the Wiki!
>
> maillist : ntg-context@ntg.nl /
> http://www.ntg.nl/mailman/listinfo/ntg-context
> webpage : http://www.pragma-ade.nl / http://tex.aanhet.net
> archive : https://foundry.supelec.fr/projects/contextrev/
> wiki : http://contextgarden.net
> ___________________________________________________________________________________
>
>
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
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wiki : http://contextgarden.net
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 9+ messages in thread* Re: overprint bug (mkiv)
2009-09-16 17:37 ` Peter Rolf
@ 2009-09-16 17:56 ` Hans Hagen
2009-09-16 19:03 ` Peter Rolf
2009-09-17 14:00 ` Peter Rolf
0 siblings, 2 replies; 9+ messages in thread
From: Hans Hagen @ 2009-09-16 17:56 UTC (permalink / raw)
To: mailing list for ConTeXt users
Peter Rolf wrote:
> test graphic is the same as in
>
> http://archive.contextgarden.net/message/20090901.094156.1dc47c81.en.html
no such message here
> So you should be able to produce the error with that example. The last
> time I simply used the old (commented) definition and everything worked
> again. I even looked at the definition of leaders that time (last used
> in LaTeX around eight years ago) and I think \zeropoint is no valid glue
> value here.
is more a hmode/vmode issue
>> there are a few more places where this is needed and in due time it
>> will be sorted out
>>
> I don't know if I should laugh or cry here. It took me nearly two days
> to make that minimal example. I'll interpret your last sentence as black
> humour... :)
well, imagine the lake of tears i have in my garden then due to all
those past bugs and such
Hans
-----------------------------------------------------------------
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
| www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://tex.aanhet.net
archive : https://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 9+ messages in thread* Re: overprint bug (mkiv)
2009-09-16 17:56 ` Hans Hagen
@ 2009-09-16 19:03 ` Peter Rolf
2009-09-16 19:30 ` luigi scarso
2009-09-17 14:00 ` Peter Rolf
1 sibling, 1 reply; 9+ messages in thread
From: Peter Rolf @ 2009-09-16 19:03 UTC (permalink / raw)
To: mailing list for ConTeXt users
Hans Hagen schrieb:
> Peter Rolf wrote:
>
>> test graphic is the same as in
>>
>> http://archive.contextgarden.net/message/20090901.094156.1dc47c81.en.html
>>
>
> no such message here
i'll try to make a minimal example tomorrow. my current failing example
is a document with six graphics (windows) on five pages.
>
>> So you should be able to produce the error with that example. The
>> last time I simply used the old (commented) definition and everything
>> worked again. I even looked at the definition of leaders that time
>> (last used in LaTeX around eight years ago) and I think \zeropoint is
>> no valid glue value here.
>
> is more a hmode/vmode issue
seems so, as the old version gives
! You can't use `\prevdepth' in horizontal mode.
\nointerlineskip ->\prevdepth
-\thousandpoint
<argument> ...SCB@arrowbuttonsrc \nointerlineskip
>
>>> there are a few more places where this is needed and in due time it
>>> will be sorted out
>>>
>> I don't know if I should laugh or cry here. It took me nearly two
>> days to make that minimal example. I'll interpret your last sentence
>> as black humour... :)
>
> well, imagine the lake of tears i have in my garden then due to all
> those past bugs and such
>
:)) indeed, you must have a lot of black humour for such a job........
but it is also said that nobody in the world can handle (salt) water
better than the dutch. so i don't worry too much. ;)
> Hans
>
> -----------------------------------------------------------------
> Hans Hagen | PRAGMA ADE
> Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
> tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
> | www.pragma-pod.nl
> -----------------------------------------------------------------
> ___________________________________________________________________________________
>
> If your question is of interest to others as well, please add an entry
> to the Wiki!
>
> maillist : ntg-context@ntg.nl /
> http://www.ntg.nl/mailman/listinfo/ntg-context
> webpage : http://www.pragma-ade.nl / http://tex.aanhet.net
> archive : https://foundry.supelec.fr/projects/contextrev/
> wiki : http://contextgarden.net
> ___________________________________________________________________________________
>
>
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://tex.aanhet.net
archive : https://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 9+ messages in thread* Re: overprint bug (mkiv)
2009-09-16 17:56 ` Hans Hagen
2009-09-16 19:03 ` Peter Rolf
@ 2009-09-17 14:00 ` Peter Rolf
2009-09-17 14:20 ` Hans Hagen
1 sibling, 1 reply; 9+ messages in thread
From: Peter Rolf @ 2009-09-17 14:00 UTC (permalink / raw)
To: mailing list for ConTeXt users
[-- Attachment #1: Type: text/plain, Size: 674 bytes --]
Hans Hagen schrieb:
> Peter Rolf wrote:
>
>> test graphic is the same as in
>>
>> http://archive.contextgarden.net/message/20090901.094156.1dc47c81.en.html
>>
>
> no such message here
>
>> So you should be able to produce the error with that example. The
>> last time I simply used the old (commented) definition and everything
>> worked again. I even looked at the definition of leaders that time
>> (last used in LaTeX around eight years ago) and I think \zeropoint is
>> no valid glue value here.
>
> is more a hmode/vmode issue
>
test file attached (the lake in my garden is getting bigger).
@luigi: definitely yes (if you go back in time a few hundred years) ;)
[-- Attachment #2: test.tex --]
[-- Type: text/plain, Size: 281 bytes --]
\setupcolors[state=start]
\setuppagenumber[state=stop]
\startuniqueMPgraphic{FOO}
fill unitsquare xyscaled(10,10) withcolor lightgray;
\stopuniqueMPgraphic
\starttext
\vbox{\normaloffinterlineskip
\vskip5px
\uniqueMPgraphic{FOO}
\vskip5px}
\stoptext
[-- Attachment #3: Type: text/plain, Size: 487 bytes --]
___________________________________________________________________________________
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maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://tex.aanhet.net
archive : https://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 9+ messages in thread* Re: overprint bug (mkiv)
2009-09-17 14:00 ` Peter Rolf
@ 2009-09-17 14:20 ` Hans Hagen
2009-09-17 14:32 ` Peter Rolf
0 siblings, 1 reply; 9+ messages in thread
From: Hans Hagen @ 2009-09-17 14:20 UTC (permalink / raw)
To: mailing list for ConTeXt users
Peter Rolf wrote:
> Hans Hagen schrieb:
>> Peter Rolf wrote:
>>
>>> test graphic is the same as in
>>>
>>> http://archive.contextgarden.net/message/20090901.094156.1dc47c81.en.html
>>>
>>
>> no such message here
>>
>>> So you should be able to produce the error with that example. The
>>> last time I simply used the old (commented) definition and everything
>>> worked again. I even looked at the definition of leaders that time
>>> (last used in LaTeX around eight years ago) and I think \zeropoint is
>>> no valid glue value here.
>>
>> is more a hmode/vmode issue
>>
> test file attached (the lake in my garden is getting bigger).
\def\reuseMPbox#1#2#3#4#5%
{\xdef\MPllx{#2}%
\xdef\MPlly{#3}%
\xdef\MPurx{#4}%
\xdef\MPury{#5}%
\hbox{\forcecolorhack\getobject{MP}{#1}}}
-----------------------------------------------------------------
Hans Hagen | PRAGMA ADE
Ridderstraat 27 | 8061 GH Hasselt | The Netherlands
tel: 038 477 53 69 | fax: 038 477 53 74 | www.pragma-ade.com
| www.pragma-pod.nl
-----------------------------------------------------------------
___________________________________________________________________________________
If your question is of interest to others as well, please add an entry to the Wiki!
maillist : ntg-context@ntg.nl / http://www.ntg.nl/mailman/listinfo/ntg-context
webpage : http://www.pragma-ade.nl / http://tex.aanhet.net
archive : https://foundry.supelec.fr/projects/contextrev/
wiki : http://contextgarden.net
___________________________________________________________________________________
^ permalink raw reply [flat|nested] 9+ messages in thread
end of thread, other threads:[~2009-09-17 14:32 UTC | newest]
Thread overview: 9+ messages (download: mbox.gz / follow: Atom feed)
-- links below jump to the message on this page --
2009-09-16 15:28 overprint bug (mkiv) Peter Rolf
2009-09-16 16:43 ` Hans Hagen
2009-09-16 17:37 ` Peter Rolf
2009-09-16 17:56 ` Hans Hagen
2009-09-16 19:03 ` Peter Rolf
2009-09-16 19:30 ` luigi scarso
2009-09-17 14:00 ` Peter Rolf
2009-09-17 14:20 ` Hans Hagen
2009-09-17 14:32 ` Peter Rolf
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